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"The CXD1244 adds a noise shaper to the CXD1144 and that's why your tests are really interesting, allowing a comparison between the two with the exact same following D/A conversion." CD 160 with CXD1244 and Staggerd TDA1541(a) with Grundig Dem and C0G SMD caps The CXD1244 low level

"It's not easy to think about what the output looks like with that technique, But after my investigations, I discovered that @bramjacobse had a nice representation of it on his websitewhere he talks and tests the staggered mode of the CXD1144" I also measured CXD 1144 vs CXD 1244 in staggered...

"There's little spike at around 640Hz but I don't what's causing it. It's at -110dB, very unlikely to be heard in the raised noise floor. In the end, this is very good." 640Hz is the +/- 650Hz Wobble Generator used for Tracking, it's added into the Radial Servo Control